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Class 1 Maths Worksheet: Addition

Maths worksheets lesson 3: Addition up to 20 · Set 679 · 40 sums
TalentJR

The method (Count on): Start with the bigger number. Count on the smaller number, one finger at a time. For a missing number (8 + ? = 15), count on from 8 up to 15, or take away: 15 − 8.

NameDateTime takenScore ___ / 40
  1. 1.14 + 3 =
  2. 2.1 + 6 + 5 =
  3. 3.There are 8 yellow beads and 7 white beads. How many beads are there in all?
  4. 4.4 + ? = 17
  5. 5.6 + 1 + 6 =
  6. 6.3 + 8 + 3 =
  7. 7.2 + 18 =
  8. 8.17 + 3 =
  9. 9.There are 4 green flowers and 7 yellow flowers. How many flowers are there in all?
  10. 10.1 + 3 + 12 =
  11. 11.? + 9 = 10
  12. 12.Meera has 10 marbles and gets 8 marbles more. How many marbles does Meera have now?
  13. 13.8 + 7 + 1 =
  14. 14.Lakshmi has 15 books and gets 2 books more. How many books does Lakshmi have now?
  15. 15.8 + 6 =
  16. 16.2 + ? = 8
  17. 17.4 + 5 =
  18. 18.Arjun has 15 balls and gets 1 ball more. How many balls does Arjun have now?
  19. 19.1 + 19 =
  20. 20.There are 6 green balloons and 12 red balloons. How many balloons are there in all?
  21. 21.6 + ? = 12
  22. 22.There are 7 pink flowers and 4 green flowers. How many flowers are there in all?
  23. 23.Rahul has 4 books and gets 2 books more. How many books does Rahul have now?
  24. 24.1 + 11 =
  25. 25.Riya has 2 laddoos and gets 13 laddoos more. How many laddoos does Riya have now?
  26. 26.14 + 5 =
  27. 27.2 + 2 + 2 =
  28. 28.10 + 3 =
  29. 29.6 + ? = 8
  30. 30.1 + 8 + 11 =
  31. 31.There are 9 yellow balloons and 3 white balloons. How many balloons are there in all?
  32. 32.2 + 5 + 1 =
  33. 33.Rahul has 13 flowers and gets 3 flowers more. How many flowers does Rahul have now?
  34. 34.There are 6 green balloons and 11 pink balloons. How many balloons are there in all?
  35. 35.There are 11 blue balls and 9 red balls. How many balls are there in all?
  36. 36.Sneha has 8 balloons and gets 12 balloons more. How many balloons does Sneha have now?
  37. 37.Sneha has 6 shells and gets 3 shells more. How many shells does Sneha have now?
  38. 38.Kabir has 13 balloons and gets 7 balloons more. How many balloons does Kabir have now?
  39. 39.19 + 1 =
  40. 40.9 + 7 =

Answer key

  1. 17
  2. 12
  3. 15
  4. 13
  5. 13
  6. 14
  7. 20
  8. 20
  9. 11
  10. 16
  11. 1
  12. 18
  13. 16
  14. 17
  15. 14
  16. 6
  17. 9
  18. 16
  19. 20
  20. 18
  21. 6
  22. 11
  23. 6
  24. 12
  25. 15
  26. 19
  27. 6
  28. 13
  29. 2
  30. 20
  31. 12
  32. 8
  33. 16
  34. 17
  35. 20
  36. 20
  37. 9
  38. 20
  39. 20
  40. 16

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